[yohamta0]

Documents two engine changes: chat.completion reading files with its prompt (dagucloud/dagu#3343) and the DAG-level watch block that starts a run for each file arriving in a folder (dagucloud/dagu#3344). Merge after those PRs ship in a release.

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Summary by CodeRabbit

• Documentation
  • Added guidance for attaching files to AI chat completions, including supported file sources, document and image handling, limits, and how file content is handled across turns.
  • Documented watched-folder scheduling, including polling behavior, run triggers, file-related environment variables, and how existing, replaced, or unreadable files are handled.

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Walkthrough

The documentation adds details for supplying files to LLM steps and for starting DAG runs when files arrive in watched folders.

Changes: LLM File Input

Layer / File(s)	Summary
Document LLM file inputs step-types/llm/index.md	Documents accepted file inputs, extraction and image handling, limits, failure cases, session behavior, and configuration placement.

Watched Folder Scheduling

Layer / File(s)	Summary
Document watched-folder scheduling writing-workflows/scheduling.md	Documents watch configuration, polling and file-stability rules, run metadata, file eligibility, and scheduler behavior.

Priority: Normal

Estimated code review effort: 2 (Simple) | ~10 minutes

Merge Risk: Minimal · up to c562b

These documentation additions have no demonstrated merge-blocking defect. Home-directory expansion for the file-input example remains unverified; publication should follow the corresponding engine release as planned.

Pre-merge checks: 5

Check name	Status	Explanation
Description Check		Check skipped - CodeRabbit’s high-level summary is enabled.
Title check		The title clearly and concisely describes both documented changes: model-step files and watched folders.
Docstring Coverage		No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0…
Linked Issues check		Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check		Check skipped because no linked issues were found for this pull request.

Full details: Docstring Coverage

Explanation

No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0 files. (2 skipped: 2 unsupported.)

Finishing Touches: 💡 1

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🔇 Additional comments: 1

step-types/llm/index.md-185-185: 1

185-185: Minor · ⚠️ Potential issue · Low value

⚠️ Unverified finding
We couldn't verify this from the code. It is shown for review, not as a verified issue.

The example uses a home-directory glob, but with.files may treat ~ literally rather than expand it to the user's home directory.

The pattern matches no files and the documented example fails before sending a model request.

This can occur when: A reader copies the example with an invoice in their ~/Downloads directory.

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• Review profile: ASSERTIVE
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• Run ID: 12a630a7-1eab-4719-8c23-0cf99f152fd5

Commits

Reviewing files that changed from the base of the PR and between 2420808 and c562b74.

Files selected for processing: 2

• step-types/llm/index.md
• writing-workflows/scheduling.md

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Status	Name	Latest Commit	Updated (UTC)
✅ Deployment successful! View logs	dagu-sh-docs	c562b74	Oct 26 2026, 02:22 PM